Well, I don't know the exact answer for it but I'm gonna try help you. So, The N is gonna be either divided, multipled, added, subtracted to a number. You have to find the operation and do it with N and It's most likely dividing or multiplication I'm not entirely sure. So, it would look something like this.
N (operation) (number) =
I don't know what the operation and number is but I hope this helps you!